Like his enchanting The Last Unicorn, Beagle's newest fantasy features characters so real they leap off his pages and into readers' souls. Tamsin Willoughby, dead some 300 years, haunts ramshackle old Stourhead Farm in Dorset, England, an ancient 700-acre estate that 13-year-old Jenny's new, English stepfather is restoring. Thoroughly American Jenny, miserable at being transplanted from New York City to rural Britain, finds a suffering kindred spirit in Tamsin, a ghost who is mourning Edric, a love she lost during Dorset's punitive Bloody Assizes under King James II. Tamsin leads Jenny through an engrossing night world inhabited by an array of British spirits--the Black Dog, a braggart Boggart, ominous Oakmen, the shapeshifting Pooka and a marvelous mystical army-booted Earth Mother. To save Tamsin and gentle Edric from eternal torment, Jenny faces evil personified: demonic Judge Jeffries, who sentenced hundreds of people to brutal execution during the Assizes. Slipping effortlessly between Jenny's brash 1999 lingo, the raw primeval dialect of ancient Dorset and Tamsin's exquisite Jacobean English, Beagle has created a stunning tale of good battling evil, of wonder and heartbreak and of a love able to outlast the worst vileness of the human heart. Fantasy rarely dances through the imagination in more radiant garb than this. (Oct.)